CLASSIFIER Russian patent published in 2017 - IPC B07B4/08 B03B5/62 

FIELD: mining.

SUBSTANCE: classifier includes a stirring chamber having a stirring fluidising bottom and a concentrating chamber having a concentrating fluidizing bottom. The concentrating fluidizing bottom and at least a portion of the concentrating chamber are located below the stirring fluidizing bottom. The concentrating chamber has a horizontal cross-sectional area of approximately 20 to 200 times less than the horizontal cross-sectional area of the stirring chamber. With the help of the above classifier, a material sorting method is carried out, comprising feeding the material to be sorted into a classifier stirring chamber, transferring the material in the stirring chamber to a fluidized state, transferring a portion of the material to the classifier concentrating chamber, fluidly linked with the mixing chamber, transferring material in the concentrating chamber to a fluidized state, the formation in the concentrating chamber of the concentrating fluidized bed, the separation of the material by means of at least concentrating fluidized bed and the output of heavier pieces of sorted material from concentrating chamber.

EFFECT: increased efficiency of separation.

10 cl, 5 dwg